Bobbin marking device



Sept. 29, 1931. w WOODRUFF 1,825,567

BOBBIN MARKING DEVICE Filed Dec. 20, 1929 IN VEN TORI A TTORNEY.

Patented Sept. 29, 1931 UNITED STATES PATENT OFFICE WILLIAM A. WOODRITFF, OF MACOhT/GEORGIA, .ASSIGNOR TO BIBB MANUFACTURIN COMPANY, OF JVEACON, GEORGIA, A CORPORATION 013 GEGRGIA BOBBIN MARKING DEVICE Application filed December 20, 1929. Serial No. 415,569.

This invention relates to improvements in a marking device for bobbins and the like, on which thread and yarn are wound and which are used in weaving and knitting machines. In the descriptionof the invention, a bobbin will be particularly referred to as the container for the thread or yarn, but it is to be understood that the device is also applicable to spools, cops and the like on which thread or yarn are wound. Thread and yarn have different characteristics material, color, size, number of strands and so onand in a weaving or spinning operation it is necessary to mark the bobbins so that the particular threads or yarns carried by them can be readily identified by the operator.

The object of the present invention is to provide a marking device that can be readily applied to a bobbin and in which the indi eating symbol can be easily changed to meet different requirements. It also has for its object the provision of a device that is wholly contained within the structure of the bob bin sothat there will be no projecting parts to interfere with the operation of the bobbin. The means employed for securing these objects are fully set forth in the following description and are illustrated by the accompanying drawings.

In the accompanying drawings, in which similar reference characters designate corresponding parts, 7

Figure 1 is a sectional view of a bobbin showing one of the members of the marking device, mounted in a head of the bobbin.

Figure 2 is a plan view, showing the head of the bobbin with the marking device mounted therein. 1

Figure 3 is a cross-sectional view of the detachable member of the device.

Figures 4 and 5, respectively, are detail perspective views of the detachable and fixed 3 member of the device.

Figure 6 is a cross-sectional view of the fixed member of the device.

Figure 7 is a cross-sectional view showing the two members of the device coupled together.

.Referring to the drawings in detail, the.

bobbin or reel of well known construction, comprises the tubular body part 10 and the heads 11 threaded on the oppositeends of the body part, as at 12. In one of the heads and the adjoining body part, at their. threaded juncture, is the circular recess 13 in which is mounted the stud 14. This stud,stamped out of sheet metal, comprises a circular base 15, flanged at its periphery on its under side. Projecting from the upper side of the circular base is the flared head 16 of the stud. The diameter of the flared head is less than the diameter of the circular base. The flared A socket or button member is provided to engage detachably the stud head 16 within the recess 13.1 This socket member comprises a head 18 and a base 19 permanently joined together. The head 18 is formed by the casing 20 enclosing a filling 21. On the under side of the casing 20 isan annular flange :22 projecting beneath the filling 21 and providing a circular opening 23 in the under side of the casing. Through this opening 23 extends the circular boss 24: forming the upper part of the base 19. This boss abuts the filling 21 and is held thereagainst by the tubular fastener 25' passing through the boss and clenched in the filling. .On the lower end of the fastener is a flange projecting beneath the boss. r i

The lower part of the base 19 forms an annular casing 26 in which is mounted thecircular spring 27. The diameter of the annular casing is slightly greater than that of the spring so that the latter can expand from its normal position. The normal diameter of the spring is slightly less than the diameter of the head 16 of the stud; also the diameter of the opening 28 in the under side of the base part 19 is sufficiently large to admit the head of the stud.

When the socket or button member is pressed onto the stud, the head 16 of the latter entering through the opening 28 in the under side of the base 19, enters the annular casing 26 and is forced through the circular spring 27, which opens for the purpose. After the stud head 16 passes through the spring, the latter contracts beneath the ledge of the stud head and thereby holds the stud and socket members. As there is but slight engagement between the spring and stud. head, the socket member can be readily detached from the stud. To facilitate the detachment of the socket member, the head of the bobbin is chamfered at the edge of the recess 13, as at 29, to admit a. fingernail beneath the edge of the socket member to lift the member. On the other face of the head 18 of the socket or button member is the mark or symbol 30 to designate the character of the thread or yarn wound on the bobbin.

When a different thread or yarn is wound on the bobbin, a socket or button member having a proper identifying symbol. can be readily substituted for the former member. lVith the indicating member mounted on the stud, the device is wholly contained within the recess so that there are no projections beyond the bobbin structure to interfere with the operation of the bobbin in the performance of its function.

What I claim is 1. The combination of a bobbin having a recess, with a screw provided with a flanged head and threaded into the bobbin with the flanged head. projecting into the central part of the recess, a stud member including a flared head clamped around the screw head within the recess of the bobbin, and a detachable indicating member fitting within the bobbin recess and including a resilient socket adapted to engage the flared head of the stud member.

2. The combination of a bobbin having a recess, with a stud member secured within the bobbin recess and including a flared head,

and an indicating member fitting within the bobbin recess, said indicating member com-- prising a hollow top part having a circular opening in its under side and a hollow base part having a boss entering said circular opening, a filling in the hollow top part, a fastener extending through the boss and seated in the filling to hold the top and base parts together, said base part forming an annular casing with an opening in its under side to admit the flared head of the stud memher, and a resilient ring within the annular casing operating to engage the flared head of the stud thrust through the same.

3. The combination of a winding reel and VILLIAM A. XVOODRUFF. 

